EXHIBIT 99.1

Insperity Announces Strong Third Quarter Results

● Q3 Operating income up 36%

● YTD Operating income up 27% on 10% revenue growth

● Working capital of $140 million and no debt

HOUSTON –  Nov. 1, 2012 – Insperity, Inc. (NYSE: NSP), a leading provider of human resources and business performance solutions for America’s best businesses, today reported results for the third quarter and nine months ended Sept. 30, 2012.  For the third quarter, the company reported net income of $11.5 million and diluted earnings per share of $0.45.  For the nine months ended Sept. 30, 2012, the company reported net income of $31.0 million and diluted earnings per share of $1.20.

“We are pleased with our excellent third quarter and year-to-date financial results achieved while implementing a new growth strategy for Insperity,” said Paul J. Sarvadi, Insperity chairman and chief executive officer.  “Now that all of the major elements of our business transformation are in place, we can focus our efforts and resources on the growth acceleration.”

Third Quarter Results

Revenues for the third quarter of 2012 increased 8.5% over the third quarter of 2011 due to a 7.5% increase in the average number of worksite employees paid per month and a 1.0% increase in revenues per worksite employee per month.  Gross profit increased 13.1% over the third quarter of 2011 to $98.4 million.  The average gross profit per worksite employee per month increased $13, or 5.3%, to $258 in the third quarter of 2012 from $245 in the 2011 period, primarily due to lower benefits costs.

Operating expenses increased 8.7% to $79.3 million compared to the third quarter of 2011.  The 2012 quarter included higher salaries and wages due in part to higher incentive compensation accruals resulting from improved operating results.  Operating expenses per worksite employee per month increased 1.0% to $208 in the 2012 quarter compared to $206 in the 2011 quarter.

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Year-to-Date Results

Year-to-date revenues were $1.6 billion, an increase of 9.8% over the 2011 period.  Gross profit for the nine months ended Sept. 30, 2012, increased 10.3% to $288.7 million.  The average gross profit per worksite employee per month increased $5, or 2.0%, to $258 in the 2012 period from $253 in the 2011 period.

Year-to-date operating expenses increased 7.2% over the first nine months of 2011 to $237.1 million.  This increase was primarily due to costs associated with the Insperity ChampionshipTM professional golf tournament, which was moved into the first nine months of the year, and higher salaries and wages, partially offset by the non-recurrence of expenses related to our 2011 rebranding initiative.  On a per worksite employee per month basis, operating expenses decreased 0.9% to $212 in the 2012 period from $214 in the 2011 period.

Adjusted EBITDA plus stock-based compensation increased 23.5% to $73.2 million compared to the first nine months of 2011, excluding $7.5 million in costs associated with two non-operational items in 2011.  Cash outlays included the repurchase of 514,628 shares at a cost of $13.8 million, dividends of $12.6 million and capital expenditures of $12.0 million.  Working capital at Sept. 30, 2012, was $140.0 million, an increase of $13.4 million over Dec. 31, 2011.

“Effective execution of our 2012 operating plan has resulted in both year-to-date earnings and cash flow exceeding our initial expectations,” said Douglas S. Sharp, senior vice-president of finance, chief financial officer and treasurer.  “These results, combined with a solid balance sheet, provide for further investment in our long-term growth and value creation for our shareholders.”

Insperity will be hosting a conference call today at 10 a.m. ET to discuss these results, give guidance for the fourth quarter and answer questions from investment analysts.  To listen in, call 877-651-0053 and use conference i.d. number 38163123.  The call will also be webcast at http://ir.insperity.com. The conference call script and company guidance will be available at the same website later today. A replay of the conference call will be available at 855-859-2056, conference i.d. 38163123, for one week.  The webcast will be archived for one year.

Insperity, a trusted advisor to America’s best businesses for more than 26 years, provides an array of human resources and business solutions designed to help improve business performance. InsperityTM Business Performance Advisors offer the most comprehensive suite of products and services available in the marketplace.  Insperity delivers administrative relief, better benefits, reduced liabilities and a systematic way to improve productivity through its premier Workforce OptimizationTM solution.  Additional company offerings include Human Capital Management, Payroll Services, Time and Attendance, Performance Management, Organizational Planning, Recruiting Services, Employment Screening, Financial Services, Expense Management, Retirement Services and Insurance Services.  Insperity business performance solutions support more than 100,000 businesses with over 2 million employees.  With 2011 revenues of $2 billion, Insperity operates in 56 offices throughout the United States.  For more information, visit http://www.insperity.com.

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The statements contained herein that are not historical facts are forward-looking statements within the meaning of the federal securities laws (Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934).  You can identify such forward-looking statements by the words “expects,” “intends,” “plans,” “projects,” “believes,” “estimates,” “likely,” “possibly,” “probably,” “goal,” “opportunity,” “objective,” “target,” “assume,” “outlook,” “guidance,” “predicts,” “appears,” “indicator” and similar expressions.  Forward-looking statements involve a number of risks and uncertainties.  In the normal course of business, Insperity, Inc., in an effort to help keep our stockholders and the public informed about our operations, may from time to time issue such forward-looking statements, either orally or in writing.  Generally, these statements relate to business plans or strategies, projected or anticipated benefits or other consequences of such plans or strategies, or projections involving anticipated revenues, earnings, unit growth, profit per worksite employee, pricing, operating expenses or other aspects of operating results.  We base the forward-looking statements on our expectations, estimates and projections at the time such statements are made.  These statements are not guarantees of future performance and involve risks and uncertainties that we cannot predict.  In addition, we have based many of these forward-looking statements on assumptions about future events that may prove to be inaccurate.  Therefore, the actual results of the future events described in such forward-looking statements could differ materially from those stated in such forward-looking statements.  Among the factors that could cause actual results to differ materially are: (i) continued effects of the economic recession and general economic conditions; (ii) regulatory and tax developments and possible adverse application of various federal, state and local regulations; (iii) the ability to secure competitive replacement contracts for health insurance and workers’ compensation contracts at expiration of current contracts; (iv) increases in health insurance costs and workers’ compensation rates and underlying claims trends, health care reform, financial solvency of workers’ compensation carriers, other insurers or financial institutions, state unemployment tax rates, liabilities for employee and client actions or payroll-related claims; (v) failure to manage growth of our operations and the effectiveness of our sales and marketing efforts; (vi) changes in the competitive environment in the PEO industry, including the entrance of new competitors and our ability to renew or replace client companies; (vii) our liability for worksite employee payroll, payroll taxes and benefits costs; (viii) our liability for disclosure of sensitive or private information; (ix) our ability to integrate or realize expected returns on our Adjacent Business strategy, including acquisitions; and (x) an adverse final judgment or settlement of claims against Insperity.  These factors are discussed in further detail in Insperity’s filings with the U.S. Securities and Exchange Commission.  Any of these factors, or a combination of such factors, could materially affect the results of our operations and whether forward-looking statements we make ultimately prove to be accurate.

Except to the extent otherwise required by federal securities law, we do not undertake any obligation to update our forward-looking statements to reflect events or circumstances after the date they are made or to reflect the occurrence of unanticipated events.

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Insperity, Inc.

Summary Financial Information

(in thousands, except per share amounts and statistical data)

	Sept. 30,			Dec. 31,
	2012			2011
	(Unaudited)
Assets
Cash and cash equivalents	$	202,218		$	211,208
Restricted cash		46,069			44,737
Marketable securities		51,702			56,987
Accounts receivable		203,108			170,933
Prepaid insurance		23,739			21,300
Other current assets		8,133			11,488
Income taxes receivable		—			2,902
Deferred income taxes		940			3,233
Total current assets		535,909			522,788
Property and equipment, net		92,927			92,944
Prepaid health insurance		9,000			9,000
Deposits		60,588			54,960
Goodwill and other intangible assets, net		27,131			28,433
Other assets		4,879			4,134
Total assets	$	730,434		$	712,259
Liabilities and Stockholders’ Equity
Accounts payable	$	3,088		$	5,085
Payroll taxes and other payroll deductions payable		107,932			168,652
Accrued worksite employee payroll expense		174,264			130,317
Accrued health insurance costs		22,522			9,427
Accrued workers’ compensation costs		48,369			46,548
Accrued corporate payroll and commissions		21,819			22,383
Other accrued liabilities		13,975			13,814
Income taxes payable		3,987			—
Total current liabilities		395,956			396,226
Accrued workers’ compensation costs		63,463			60,054
Deferred income taxes		10,768			10,772
Total noncurrent liabilities		74,231			70,826
Stockholders’ equity:
Common stock		309			309
Additional paid-in capital		136,688			135,871
Treasury stock, cost		(138,784	)		(134,647	)
Accumulated other comprehensive income, net of tax		70			24
Retained earnings		261,964			243,650
Total stockholders’ equity		260,247			245,207
Total liabilities and stockholders’ equity	$	730,434		$	712,259

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Insperity, Inc.

Summary Financial Information (continued)

(in thousands, except per share amounts and statistical data)

(Unaudited)

	Three months ended Sept. 30,									Nine months ended Sept. 30,
	2012			2011			Change			2012			2011			Change
Operating results:
Revenues (gross billings of $3.068 billion, $2.835 billion, $9.339 billion and $8.454 billion, less worksite employee payroll cost of $2.556 billion, $2.363 billion, $7.712 billion and $6.973 billion, respectively)	$	511,953		$	471,821			8.5	%	$	1,626,386		$	1,481,105			9.8	%
Direct costs:
Payroll taxes, benefits and workers’ compensation costs		413,533			384,792			7.5	%		1,337,668			1,219,276			9.7	%
Gross profit		98,420			87,029			13.1	%		288,718			261,829			10.3	%
Operating expenses:
Salaries, wages and payroll taxes		44,032			39,494			11.5	%		127,402			117,558			8.4	%
Stock-based compensation		2,429			2,109			15.2	%		7,385			6,455			14.4	%
Commissions		3,358			3,399			(1.2	)%		10,299			9,750			5.6	%
Advertising		3,680			5,235			(29.7	)%		17,001			18,280			(7.0	)%
General and administrative expenses		21,122			18,912			11.7	%		61,694			57,828			6.7	%
Depreciation and amortization		4,659			3,786			23.1	%		13,336			11,335			17.7	%
Total operating expenses		79,280			72,935			8.7	%		237,117			221,206			7.2	%
Operating income		19,140			14,094			35.8	%		51,601			40,623			27.0	%
Other income (expense):
Interest income, net		142			245			(42.0	)%		462			829			(44.3	)%
Other, net		(3	)		(7,501	)		(100.0	)%		141			(7,497	)		(101.9	)%
Income before income tax expense		19,279			6,838			181.9	%		52,204			33,955			53.7	%
Income tax expense		7,827			2,739			185.8	%		21,247			14,329			48.3	%
Net income	$	11,452		$	4,099			179.4	%	$	30,957		$	19,626			57.7	%
Less net income allocated to participating securities		(334	)		(120	)		178.3	%		(898	)		(582	)		54.3	%
Net income allocated to common shares	$	11,118		$	3,979			179.4	%	$	30,059		$	19,044			57.8	%
Basic net income per share of common stock	$	0.45		$	0.16			181.3	%	$	1.20		$	0.75			60.0	%
Diluted net income per share of common stock	$	0.45		$	0.16			181.3	%	$	1.20		$	0.74			62.2	%

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Insperity, Inc.

Summary Financial Information (continued)

(in thousands, except per share amounts and statistical data)

(Unaudited)

	Three months ended							Nine months ended
	Sept. 30,							Sept. 30,
	2012		2011		Change			2012		2011		Change
Statistical data:
Average number of worksite employees paid per month		127,096		118,226		7.5	%		124,418		115,097		8.1	%
Revenues per worksite employee per month (1)	$	1,343	$	1,330		1.0	%	$	1,452	$	1,430		1.5	%
Gross profit per worksite employee per month		258		245		5.3	%		258		253		2.0	%
Operating expenses per worksite employee per month		208		206		1.0	%		212		214		(0.9	)%
Operating income per worksite employee per month		50		40		25.0	%		46		39		17.9	%
Net income per worksite employee per month		30		12		150.0	%		28		19		47.4	%

(1) Gross billings of $8,047, $7,992, $8,340 and $8,161 per worksite employee per month, less payroll cost of $6,704, $6,662, $6,888 and $6,731 per worksite employee per month, respectively.

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Insperity, Inc.

Summary Financial Information (continued)

(in thousands, except per share amounts and statistical data)

(Unaudited)

GAAP to Non-GAAP Reconciliation Tables

	Three months ended							Nine months ended
	Sept. 30,							Sept. 30,
	2012		2011		Change			2012		2011		Change
Payroll cost (GAAP)	$	2,556,114	$	2,362,941		8.2	%	$	7,712,302	$	6,972,806		10.6	%
Less: Bonus payroll cost		156,723		174,668		(10.3	)%		728,589		644,129		13.1	%
Non-bonus payroll cost	$	2,399,391	$	2,188,273		9.6	%	$	6,983,713	$	6,328,677		10.4	%
Payroll cost per worksite employee per month (GAAP)	$	6,704	$	6,662		0.6	%	$	6,888	$	6,731		2.3	%
Less: Bonus payroll cost per worksite employee per month		411		492		(16.5	)%		651		621		4.8	%
Non-bonus payroll cost per worksite employee per month	$	6,293	$	6,170		2.0	%	$	6,237	$	6,110		2.1	%

Non-bonus payroll cost represents payroll cost excluding the impact of bonus payrolls paid to the company’s worksite employees.  Bonus payroll cost varies from period to period, but has no direct impact to the company’s ultimate workers’ compensation costs under the current program.  As a result, Insperity management refers to non-bonus payroll cost in analyzing, reporting and forecasting the company’s workers’ compensation costs.

	Three months ended							Nine months ended
	Sept. 30,							Sept. 30,
	2012		2011		Change			2012		2011		Change
Net income (GAAP)	$	11,452	$	4,099		179.4	%	$	30,957	$	19,626		57.7	%
Income tax expense		7,827		2,739		185.8	%		21,247		14,329		48.3	%
Interest expense		89		19		368.4	%		265		19		—
Depreciation and amortization		4,659		3,786		23.1	%		13,336		11,335		17.7	%
EBITDA		24,027		10,643		125.8	%		65,805		45,309		45.2	%
Stock-based compensation		2,429		2,109		15.2	%		7,385		6,455		14.4	%
Non-operational items		—		7,496		(100.0	)%		—		7,496		(100.0	)%
Adjusted EBITDA	$	26,456	$	20,248		30.7	%	$	73,190	$	59,260		23.5	%

EBITDA represents net income computed in accordance with generally accepted accounting principles (“GAAP”), plus interest expense, income tax expense, depreciation and amortization expense.  Insperity management believes EBITDA is often a useful measure of the company’s operating performance, as it allows for additional analysis of the company’s operating results separate from the impact of taxes and capital and financing transactions on earnings.

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	Three Months Ended Sept. 30,							Nine Months Ended Sept. 30,
	2012		2011		Change			2012		2011		Change
Net income (GAAP)	$	11,452	$	4,099		179.4	%	$	30,957	$	19,626		57.7	%
Non-operational items, net of tax		—		4,493		(100.0	)%		—		4,493		(100.0	)%
Adjusted net income	$	11,452	$	8,592		33.3	%	$	30,957	$	24,119		28.4	%

	Three Months Ended Sept. 30,							Nine Months Ended Sept. 30,
	2012		2011		Change			2012		2011		Change
Diluted net income per share of common stock (GAAP)	$	0.45	$	0.16		181.3	%	$	1.20	$	0.74		62.2	%
Non-operational items, net of tax		—		0.17		(100.0	)%		—		0.17		(100.0	)%
Adjusted diluted net income per share of common stock	$	0.45	$	0.33		36.4	%	$	1.20	$	0.91		31.9	%

Adjusted net income and adjusted diluted net income per share of common stock represent net income and diluted net income per share computed in accordance with GAAP, excluding the impact of the two non-operational items (loss on aircraft exchange and California settlement), net of tax. Insperity management believes adjusted net income is a useful measure of the company’s operating performance in this period, as it allows for additional analysis of the company’s operating results separate from the impact of these items.

Non-bonus payroll, EBITDA, adjusted EBITDA, adjusted net income and adjusted diluted net income per share of common stock are not financial measures prepared in accordance with GAAP and may be different from similar measures used by other companies.  Non-bonus payroll, EBITDA, adjusted EBITDA, adjusted net income and adjusted diluted net income per share of common stock should not be considered as a substitute for, or superior to, measures of financial performance prepared in accordance with GAAP.  Insperity includes non-bonus payroll, EBITDA, adjusted EBITDA, adjusted net income and adjusted diluted net income per share of common stock in this press release because the company believes they are useful to investors in allowing for greater transparency related to the costs incurred under the company’s workers’ compensation program and the company’s operating performance during the periods presented. Investors are encouraged to review the reconciliation of the non-GAAP financial measures used in this press release to their most directly comparable GAAP financial measures as provided in the tables above.